Spike's Tactical M4 flat top upper receiver, Machined from a 7075 T6 Mil-Spec Forging with Mil-Spec Type III Hardcoat Anodized finish, T-markings, Spikes Tactical logo and M4 feed ramps. Barrel is 4150 Chromoly Vanadium Alloy, M4 barrel extension, Chrome chamber and bore, 5.56mm NATO chamber, 1:7 Twist, Magnetic particle testing on every barrel, Phosphate finish with Carbine length gas system. The bolt carriers are Chrome lined with a Mil-Spec phosphate finish with forged Mil-Spec carrier key, Chrome lined, attached with Grade 8 hardware and Properly staked and MP tested. Each extractor is fitted with a Mil-Spec black insert and Mil-Spec Viton o-ring. Includes double heat shield M4 hand guards and A2 Flash Hider.
Made in U.S.A.